Feature, Freight News, Logistics, Sea


Mammoth effort delivers vital Dogger Bank components

[ December 5, 2025   //   ]

Heavylift logistics firm Mammoet has transported three offshore substations for the world’s largest offshore wind farm, Dogger off the Northeast coast of England.

The wind farm is being developed by SSE, Equinor and Vårgrønn in 3 phases, Dogger Bank A, B and C. Mammoet was involved in each phase.

Fabricated by Aibel, the substations were constructed in stages at two different locations.

The steel construction of the substations began in Aibel’s yard in Thailand, before being shipped to a second Aibel yard in Haugesund, Norway for further steelwork to be carried out and installation of transformers and other complex components.

With fabrication split between two yards in different parts of the world, a specialist vessel was chartered to move the substations.

Mammoet assisted Aibel with the three execution phases of each substation: the load-out in Thailand in Laem Chabang, the load-in in Haugesund, Norway and the final weighing and load-out for transport to the North Sea.

The biggest challenge was sourcing the large number of Self-Propelled Modular Transporters (SPMTs) required to perform the three phases across two locations – 338 axle lines in Thailand and 344 were needed in Norway, sourced from Mammoet’s global fleet of over 5,000 units, and delivered on container vessels or by land transport. 

Aibel also fabricated two bespoke load-out frames to ensure the substations stayed firmly in position when transported on the SPMTs.

Tags: